Self-setting safety razor



De.15,1925. l 1,565,704

R. BOIZARD SELF SETTING SAFETY-RAZOR Filed Dec. l0. 1924 Patented Dec. l5, 1925.

UNITED STATES 1,565,104 PATENT OFFICE.

RAOUL' BOIZARD, OF PARIS, FRANCE.

sans-SETTING Application med December T0 all whom 'it may concern: i

Be it known that I, RAOUL yBolzano, a citizen of the Republic of France, residing at Paris, France, have invented certain new and useful Improvements in Self-Setting Safety Razors, of which the following is a specification.

The present invention relates to safety razors; and its main object, stated broadly, is to provide an improved sharpening or stropping attachment therefor which enables a blade to be honed without `being removed from the holder. 4

The invention is articularly applicable to razors'usinga wa er blade'of the double# edged type,..a s it enables the rear ed e of such a-blade to be sharpened while the glade itself is disposed in the holder with its front edge in normal shavingposition; the parts being so arranged that at the completion of the sharpening operation, the blade can be loosened and rotated through a halfturn about its axis, thereby bringing its sharpened rear edge into shaving position and its dulled front edge into engagement with the sharpening device. The latter preferably consists of a pair .of coacting rolls of suitable character which are adapt` ed to engage the opposite faces of the blade and to be rotated 1n opposite directions; the aforementioned-turning movement of the blade serving, therefore, to withdraw one edge of the blade from the bite of the rolls and to bring the other edge into engagement therewith when `a double-edged i blade is being used.

The accompanying drawing represents two slightly different forms which the 1nvention may take inpractice, both figures being longitudinal sectional views.

Referrin more particularly to the drawing, B indicates in both ii ures the hollow handle of the razor, Cv the xed or supporting member of the blade holder (usuallyin the form of a guard), C the movable or clamping member of the holder, Cz the stem on t e latter member having the usual threaded portion C3, and D the adjustingv Vmember having the threaded socket D to receive the threaded partA C3 of stem C2, so as to tighten or loosen the clamp; these parts being of any preferred or standard type. The blade E is adapted to be clamped in the holder, .as usual, and is here shown as of the double-edged, wafer type.

The sharpening attaciin'ient preferably SAFETY Razon. A

io, 1924. serial No. 755,015.`

consists, as already stated, of apair of coacting rolls, indicated at A, A, in Fig. 1, and at A', A in Fig.` 2, these rolls being of any suitable construction and treated in any desired way to enable them to exert the necessarysharpening or stropping action on the blade. They are mounted adjacent the blade holder in such a position that the rear edge of a blade clam ed in normal shaving osition in the hol er will project directly into their bite, so that when the Y rolls are rotated the blade will be sharpened on both faces at the saine time.

In the form illustrated in Fig. 1, one roll A is directly attached to the movable member- C of the holder, and the other to the reduced ortion B of the handle B immediately a jacent the fixed member C; while in Fig. 2, both rolls' A areattached to the afore-mentioned portion BL .of the handle. Due to this arrangement, the roll A carried by the movable holder member C will be moved with the latter into and out 'of contact with the other roll A when the adjusting screw is o erated, whereas the two rolls A (Fig. 25) always occupy the same relative position. In the figure last mentioned, the rolls A are eccentrically mounted and are connected to rotate in unison by means-of intermeshinggears F which are secured to the axles of the rolls; one of said axles being lcrank I for rotatin it. he two rolls A (Fig. 1)- are rotate by moving .the upper roll across a suitable bearing surface, the rotation of that roll being transmitted by friction to the other roll. Both rolls A act on the blade at the same time, whereas the two eccentrically-mounted rolls A act `in alternation u on the blade edge which can flex slightly 1n either direction, as will be apparent. It is to vbe understood, however, that the mounting and operationof the two pairs of rolls may be reversed or otherwise modified, and that various other changes may be made in the same connection without departing from the scope of the invention as hereinafter claimed.

In both forms of the invention, as illustrated, the u per or clamping member C of the blade liolder can be loosened at the completion of the sharpening operation by turning screw D in' the Cproper direction, whereby said member 1s moved far enough away from its companion member C to enable the blade to be given a halfrovided with a.

i'eo

turn about its axis; such movement of the blade withdrawing its sharpened rear edge from'the bite of the rolls and bringing it into shaving position at the front of the 5 holder, while at the same time, the dulled front edge of the blade is brought into engagement with the rolls, after which the screw D can again be tightened.

I claim as my invention 1. A self-stropping safety razor, comJ prising a handle, a blade holder at one fend thereof, and a sharpeningI device adapted to directly engage and sharpen both faces of the adjacent edge of a blade disposed in normal shaving position in theholder.

2. A self-stropping safety razor, comprising a handle, ablade holder at one end thereof, and a pair of coacting sharpening rolls adapted to engage between them the adjacent.` edge of a blade disposed 1n normal shaving position in the holder. 3. A self-stroppi'ng safetyrazor, comprising a handle, a blade-supporting member carried thereby, a clamping member cooperative with said supporting member, and a sharpening device adapted to engage and sharpen both faces of the adjacent edge of a blade held in normal shaving position between the clamping and supporting members. I

4f. A self-stropping safety razor for double-edged wafer blades, comprising a` handle, a blade holder carried thereby and including a movable clamping member, a sharpening device adapted to engage the rearedge of a double-edged blade disposed in the holder with its front edge in shaving position, and an adjustingmember for the clamping member vadapted to loosen the latter and thereby enable the blade to be rotated half a turn upon its axis and in its own plane to bring its front edge into position for engagement by the sharpening device.-

5. A self-stropping safety razor for double-edged wafer blades, comprising a handle, a blade holder carried thereby and including a movable clamping member, a pair of coacting sharpening rolls adapted to engage between them the rear edge of a double-edge blade disposed in the holder with its front edge in shaving position, and an adjusting member for the clamping member to loosen the same and thereby enable the blade to be rotated half a turn about its axis and in its own plane so as to bring its front edge betweenv the sharpening rolls. i l

6. A self-stroppin safety razor, comprising 4a handle provi ed at one end with a blade-supporting member, a clamping'member cooperative with the supporting member, and a pair of coacting-sharpening rolls `adapted to directly engage between them the rear edge of a double-edged -blade disposed'between-the clamping and supporting members with its front edge 'in shaving position.'

7. A self-stropping safety razor, comprising a handle, a blade holder carried thereby and including a movable clamping member, and a sharpening device mounted in position to directly engage the edge of a blade clamped in the holder; said clamping member adapted tobe loosened to enable the blade to be rotated in the holder a half-turn about its axis and in its own plane, thereby to bring its sharpened edge into shaving position. i

8. A self-stropping safety razor, comprising a handle, ablade holder carried thereby and including a movable clamping member, and a pair of coacting sharpening rolls mounted in position to engage between them the edge of a blade clamped in the. holder; said clamping member adapted to be loosened to enable the blade to be rotated in the holder a half-turn about its axis and in its own plane, thereby to disengage the sharpened edge from 'the rolls and 'bring it into shaving position. f i 9. A self-stropping'safety razior', comprismg a handle; a blade holder carried thereby and embodying a blade-supporting member and a clamping member movable toward and from the same; a pair of` coacting sharpening rolls adapted to engage between them the edge of ablade clamped between said members, one rll being carried by the supporting member, and the other roll being carried by and movable with the clamping member into and out of direct engagement with the first roll; and an adjusting member for the clamping memberV to eect its movements relative to the supporting member.

' A self-stroppi'ng safety razor, comprlsing a handle; a blade holder carried therebyand embodying a blade-supporting member and a membe'rcooperative with the supportlng member to 'clamp a double-edged blade 1n the holder'with its front edge in normal shaving position; a pair of coacting sharpening rolls adapted to engage between them the rear edge of the blade, one roll being carried by thesuppOrtng member, and the other roll -being carried by and movable with the clamping'member into and out of direct engagement with the first roll; and means for moving the clamping member toward and from theV supportingmember,

to tighten or loosen the blade, said blade adapted to be :rotated a half-turn about its axis and in its own plane when loosened so as to bring its sharpened rear edge into shaving position and its front edge between the two sharpening rolls. v l

In testimony whereof I aflix my signature.

RAOUL BOIZARD. 

